Supraspinatus Contribution and Proprioceptive Behavior at the Shoulder
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Shoulder complaints constitute a significant portion of primary care visits each year in the US, costing $7 billion in annual medical treatment. Shoulder complaints arise from some type of trauma caused by muscle imbalances, proprioception, overuse, anatomical or a combination of these factors. More than two thirds of complaints involve the rotator cuff. Literature regarding shoulder mechanics and proprioception is mixed and with contradictory results. This may be the reason for the high incidence and low success rate in treating shoulder complaints. Here the contributions of the supraspinatus muscle to humeral elevation, and shoulder proprioception are investigated. The results of this dissertation are applicable to developing shoulder injury treatment and preventative strategies, computational shoulder models, and understanding proprioception at the shoulder. This dissertation includes previously published and unpublished co-authored material.